Accession Number : ADA190703

Title :   The Corrosion Resistance of an Aluminum Alloy Coated with Polysilazane Derived Ceramics.

Descriptive Note : Technical rept. no. 11, May 86-May 87,

Corporate Author : SRI INTERNATIONAL MENLO PARK CA

Personal Author(s) : Lenhart, S J ; Blum, Y D ; Laine, R M

PDF Url : ADA190703

Report Date : 20 Dec 1987

Pagination or Media Count : 15

Abstract : Aluminum plates were dip coated in a poly N methylsilazane, solution. Heating process at 400 C transformed the inorganic polymer into coatings that exhibited good corrosion resistance characteristics in a marine environment relative to the bare metal as measured and interpreted by electrochemical methods. The corrosion rate was inhibited by almost one order of magnitude. No microscopic degradation of the coatings was observed after 21 days of measurement, which confirms the stability of the coatings as determined by the electrochemical technique. Keywords: Polysilazanes; Aluminum alloys; Ceramic precursors; Inorganic polymers; Coating; Corrosion resistance; Marine environment.

Descriptors :   *ALUMINUM ALLOYS, *CORROSION RESISTANCE, *INORGANIC POLYMERS, *SILICON COATINGS, *CERAMIC COATINGS, ALUMINUM, CERAMIC MATERIALS, DEGRADATION, ELECTROCHEMISTRY, ELECTROMECHANICAL DEVICES, METAL PLATES, MICROSCOPY, OCEAN ENVIRONMENTS, PRECURSORS, STABILITY, SILICON COMPOUNDS, PROTECTIVE COATINGS, COST EFFECTIVENESS

Subject Categories : Properties of Metals and Alloys
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE